Headphone



FIG. 1 is a perspective view of a headphone showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The shade lines in the Figures show contour and not surface ornamentation. The short dash broken lines indicate portions of the headphone that form no part of the claimed design. The dot-dash broken lines show the boundaries of the headphone and form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 